DP Chemistry (last assessment 2024)

Question 23M.1.SL.TZ2.3

Date	May 2023	Marks available	[Maximum mark: 1]	Reference code	23M.1.SL.TZ2.3
Level	SL	Paper	1	Time zone	TZ2
Command term		Question number	3	Adapted from	N/A

[Maximum mark: 1]

23M.1.SL.TZ2.3

20 cm³ of gas A reacts with 20 cm³ of gas B to produce 10 cm³ of gas A_xB_y and 10 cm³ of excess gas A. What are the correct values for subscripts x and y in the empirical formula of the product A_xB_y (g)?

	x	y
A.	2	1
B.	2	2
C.	1	1
D.	1	2

[1]

Markscheme

Syllabus sections

Core

Core » Topic 5: Energetics/thermochemistry » 5.1 Measuring energy changes

Core » Topic 1: Stoichiometric relationships » 1.3 Reacting masses and volumes

Core » Topic 1: Stoichiometric relationships

Core » Topic 5: Energetics/thermochemistry

Question 23M.1.SL.TZ2.3

Select a Test

Syllabus sections

Confirm action